v3.25.2
Equity Incentive Plans (Tables)
6 Months Ended
Jun. 30, 2025
Equity Incentive Plans  
Schedule of stock option activity under the Equity Plans

    

    

Weighted

    

    

 

Average

 

Weighted

 

Aggregate

 

Exercise Price

 

Average Remaining

 

Intrinsic

    

Options

    

Per Share

    

Life in Years

    

Value

Outstanding at December 31, 2024

 

6,416,744

$

8.43

 

8.43

$

1,937

Exercised

(6,667)

$

2.40

Forfeited

 

(1,378,104)

$

7.55

 

Outstanding at June 30, 2025

 

5,031,973

$

8.68

 

6.00

$

Options exercisable at June 30, 2025

 

3,639,701

$

10.98

 

4.94

Options vested and expected to vest at June 30, 2025

 

5,031,973

$

8.68

 

6.00

$

Schedule of assumptions used to determine grant-date fair value of stock options

Six Months Ended June 30,

    

2024

Expected volatility

92.84

%

Weighted average risk-free interest rate

4.00

%

Expected dividend yield

0.00

%

Expected term (in years)

6.44

Schedule of RSU activity under the 2016 Plan

Weighted

Average Grant

    

Number of Shares

    

Date Fair Value

Outstanding at December 31, 2024

 

220,000

$

19.40

Vested

(220,000)

$

19.40

Outstanding at June 30, 2025

 

$

Schedule of recognized stock-based compensation expense related to the issuance of stock option awards and RSUs to employees and non-employees in the condensed consolidated statements of operations

Three Months Ended June 30, 

Six Months Ended June 30, 

    

2025

    

2024

    

2025

    

2024

Research and development

 

$

387

$

729

$

1,021

$

1,356

General and administrative

 

476

 

641

1,046

 

1,262

Restructuring charges

626

626

Total

$

1,489

$

1,370

$

2,693

$

2,618